What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

Delta is the most popular carrier operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Sydney from Louisville according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 4 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of March 2026.

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$574 Cheap Flights from Louisville to Sydney in 2026

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Find the cheapest flights from Louisville to Sydney

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:05 pm - 6:55 am

SDF

SYD

26h 50m

2 stops

9:30 am - 8:01 pm

SYD

SDF

24h 31m

2 stops

$1,233United Airlines

Wed, Jun 10 - Wed, Jun 17

8:11 am - 6:50 am

SDF

SYD

32h 39m

2 stops

9:15 am - 7:13 pm

SYD

SDF

23h 58m

2 stops

$1,313Delta

Tue, Jun 23 - Tue, Jul 7

10:39 am - 6:50 am

SDF

SYD

30h 11m

2 stops

9:15 am - 10:36 pm

SYD

SDF

27h 21m

2 stops

$1,321Delta

Thu, May 21 - Fri, May 29

3:25 pm - 6:55 am

SDF

SYD

25h 30m

2 stops

9:30 am - 8:23 pm

SYD

SDF

24h 53m

2 stops

$1,332United Airlines

Wed, Jun 10 - Wed, Jun 17

3:37 pm - 6:55 am

SDF

SYD

25h 18m

2 stops

9:30 am - 8:17 pm

SYD

SDF

24h 47m

2 stops

$1,333United Airlines

Thu, May 7 - Thu, May 14

7:05 am - 6:50 am

SDF

SYD

33h 45m

2 stops

9:15 am - 7:13 pm

SYD

SDF

23h 58m

2 stops

$1,371Delta

Thu, Jun 25 - Tue, Jul 7

7:51 pm - 6:50 am

SDF

SYD

44h 59m

2 stops

9:15 am - 7:13 pm

SYD

SDF

23h 58m

2 stops

$1,389Delta

Wed, Jun 24 - Tue, Jul 7

9:21 am - 7:30 am

SDF

SYD

32h 09m

1 stop

5:50 pm - 7:26 pm

SYD

SDF

39h 36m

1 stop

$1,411Multiple Airlines

Wed, May 20 - Fri, May 29

8:00 am - 7:00 am

SDF

SYD

33h 00m

3 stops

9:30 am - 8:01 pm

SYD

SDF

24h 31m

2 stops

$1,413United Airlines

Tue, Jun 23 - Tue, Jul 7

9:21 am - 11:50 am

SDF

SYD

36h 29m

2 stops

5:50 pm - 7:26 pm

SYD

SDF

39h 36m

1 stop

$1,416Multiple Airlines

Wed, May 20 - Fri, May 29

Air Canada flights from Louisville to Sydney

Our best Air Canada deals on Louisville to Sydney flight tickets

Air Canada

May 2

SDF10:06 amLouisville Intl

31h 14m

3 stops

SYD7:20 amSydney Kingsford Smith

May 6

SYD9:20 amSydney Kingsford Smith

24h 57m

2 stops

SDF8:17 pmLouisville Intl

$2,133

Air Canada

Mar 25

SDF6:00 amLouisville Intl

35h 35m

3 stops

SYD8:35 amSydney Kingsford Smith

Apr 7

SYD9:20 amSydney Kingsford Smith

27h 52m

2 stops

SDF11:12 pmLouisville Intl

$3,846

Air Canada

Mar 25

SDF6:00 amLouisville Intl

35h 35m

3 stops

SYD8:35 amSydney Kingsford Smith

Apr 4

SYD10:20 amSydney Kingsford Smith

47h 44m

3 stops

SDF7:04 pmLouisville Intl

$4,579

Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets

Qantas Airways

Jun 24

SDF6:02 pmLouisville Intl

23h 03m

2 stops

SYD7:05 amSydney Kingsford Smith

Jul 6

SYD12:00 pmSydney Kingsford Smith

25h 16m

1 stop

SDF11:16 pmLouisville Intl

$1,808

Qantas Airways

Aug 26

SDF5:50 pmLouisville Intl

23h 05m

1 stop

SYD6:55 amSydney Kingsford Smith

Sep 5

SYD12:00 pmSydney Kingsford Smith

19h 29m

1 stop

SDF5:29 pmLouisville Intl

$1,842

Qantas Airways

Aug 26

SDF5:50 pmLouisville Intl

23h 05m

1 stop

SYD6:55 amSydney Kingsford Smith

Sep 5

SYD12:00 pmSydney Kingsford Smith

19h 29m

1 stop

SDF5:29 pmLouisville Intl

$1,843

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 6/10

2:05 pm-6:55 am

2 stops26h 50m

Sydney Kingsford Smith

Wed 6/17

9:30 am-8:01 pm

2 stops24h 31m

$1,233

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/23

8:11 am-6:50 am

2 stops32h 39m

Sydney Kingsford Smith

Tue 7/7

9:15 am-7:13 pm

2 stops23h 58m

$1,313

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 5/21

10:39 am-6:50 am

2 stops30h 11m

Sydney Kingsford Smith

Fri 5/29

9:15 am-10:36 pm

2 stops27h 21m

$1,321

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 6/10

3:25 pm-6:55 am

2 stops25h 30m

Sydney Kingsford Smith

Wed 6/17

9:30 am-8:23 pm

2 stops24h 53m

$1,332

Quickest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 5/7

3:37 pm-6:55 am

2 stops25h 18m

Sydney Kingsford Smith

Thu 5/14

9:30 am-8:17 pm

2 stops24h 47m

$1,333

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 6/25

7:05 am-6:50 am

2 stops33h 45m

Sydney Kingsford Smith

Tue 7/7

9:15 am-7:13 pm

2 stops23h 58m

$1,371

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 6/24

7:51 pm-6:50 am

2 stops44h 59m

Sydney Kingsford Smith

Tue 7/7

9:15 am-7:13 pm

2 stops23h 58m

$1,389

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 5/20

9:21 am-7:30 am

1 stop32h 09m

Sydney Kingsford Smith

Fri 5/29

5:50 pm-7:26 pm

1 stop39h 36m

$1,411

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/23

8:00 am-7:00 am

3 stops33h 00m

Sydney Kingsford Smith

Tue 7/7

9:30 am-8:01 pm

2 stops24h 31m

$1,413

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 5/20

9:21 am-11:50 am

2 stops36h 29m

Sydney Kingsford Smith

Fri 5/29

5:50 pm-7:26 pm

1 stop39h 36m

$1,416

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Sydney?

In general, November is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,228. If you are unable to visit Sydney during the month of November, then departing from Louisville during the month August is also very affordable. Most momondo users find prices during this month for around $1,232.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time	25h 14m
Direct flights	None

The fastest flight from Louisville to Sydney takes 25h 14m

There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.

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How far is Louisville Intl to Sydney Kingsford Smith by plane?
A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 25h 14m.
When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of March 2026.
How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Sydney is United Airlines (74% of total bookings). The next most popular airline is Delta (26%).

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $973	Free Cancellation	Rating 7.4 9,469 reviews		Search United Airlines flights
Delta	PriceFrom $985	Free Cancellation	Rating 7.9 8,320 reviews		Search Delta flights

Parramatta

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Katoomba

Wollongong

Penrith

Manly

Randwick

Coogee

Leura

Lithgow

Cronulla

Charlestown

Terrigal

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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Cheap flights from Louisville to Sydney from $574

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Louisville to Sydney

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What airlines fly to Sydney?

When to book flights from Louisville to Sydney

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

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Why use momondo?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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